I don't think it looks "shameful". Its not too bad except for the algae issues.. like James said a little organizing will help out a good bit. The gentle slope in the middle is cool, maybe add more substrate to the back or slope it a little back to front to give a little depth. I'm far from being decent at "aquascaping" myself though but there are some really awesome 2.5g layouts posted here if you do a little searching.
Thats a good bit of light over 2.5g without ferts or co2... I think thats the reason I'm able to keep my 2.5g algae free (only 8W flourescent).