If Bio/EA used microtransactions, what do you want/not want to see?

No they cannot. There are required purchases, like packages content, or game mechanics made so horrible that to not use the store would be insane (LotRO).

You would be excluded from things that would be automatically available to you through a subscription.

I've tried many so called Free to Play games, and not one of them lived up to that name.

What you are talking about are expansions to the game. Free to play games often release small expansions packs more frequently than subscription based games which save up content and release large expansions for sale in stores.

No matter what model a game follows, expect to pay for expanded content.

Wrong, they break down "expansion" and what would normally be free content upgrades for subscriptions, and sell them. STO does this, LotRO does this, D&D online does this, etc. etc.

No. I am not. Even including the stuff released via the cash shop, there has been nothing that could even remotely be called an 'expansion' released for STO since it went F2P+MT. What I am talking about is things like they introduce a new loot dynamic which allows you to get some really funky stuff dropping from mobs - which are locked inside lockboxes, with keys on sale in the cash shop. Or they come up with a new flagship for each of the main two factions - which you get from the cash shop. Or they come up with a new ship, which comes with a console installed that gives you a highly useful ability - which, you guessed it, you buy from the cash shop. Meanwhile, the content offered for free is 'episode reruns' of previous missions.

With subscription models, you tend to only have to pay extra if the content is worth it - such as the Jump to Lightspeed expansion in Star Wars Galaxies, which more or less created a fully-fledged MMO space shooter within the existing MMORPG framework, or the expansions to WoW, which added craploads of quests, added races and added entire new areas. This, I have no problem with. If F2P+MT is abused, however, you end up paying much more for less content, and have no real choice but to do so, or else you can't really play the game.

Speeders, pets, stat-less orange gear. Legacy Unlocks for the most part, though I'd prefer they didn't on the Ship upgrades.

Subscription games: you pay 15 dollars a month for small content updates and pay extra for large expansions.

Free to Play games: you buy new content in the cash shop and purchase large expansions in the cash shop.

Yes, you have to buy most content in a cash shop for FTP games. How else are companies that do use a subscription program suppose to earn their revenue?

qft!!!!

Microtransations.. what would I like to see? None

If MTs are implemented (subscription or not) I'm cancelling, deinstalling, and cleaning SW:TOR bookmarks. If I wanted to pay to win I'd have gone with the numerous models of that already out there.

You do know that name changes, server transfers, and character make overs are micro-transactions? Enjoy the next two months before they roll out paid server transfers and you quit.

Anything a person pays above the normal subscription fee is a micro-transaction. Do not let game companies fool you into thinking that paid services are anything more than a micro-transaction.

That's called "Pay to Win" and creates an unbalanced player environment.