Utopia Fragment suffers from the fact that it's benefit runs directly contradictory to its unique 5/3 nature. Not only is it hard to score early, but you're unlikely to pull it when you want to (as your first agenda). Even if you do score it first you're almost halfway to victory already and so the effect is only in play for your remaining 2-3 agendas, and compounding that it's unlikely to be used on your 2/1s since you can just score those out of hand.

But, if you do score it first and you're running a few 3/1s (or I guess 2/0s?) such that you still have a few agendas to score it can be quite powerful. 4c is no small tax for the runner, and that's assuming you don't play tricks with advanceable traps. (Since the runner will know not to run until they can afford the extra tax, you can bait them into it just to have them waste their excess ice money).

Ultimately though that's bad deck building practice, so I'm of the opinion that this card is relegated to jank. That being said I'm sure getting an Underway Renovation with 10+ advancements on it would be funny even for the runner. An interesting point of note however is that this card synergizes quite well with mid seasons/Weyland tag and bag ESPECIALLY with Oaktown Grid as the advancements both fuel you and cost the runner a huge tax which will open up even the richest runner to counterattack.