May I submit same url after changes

I am not sure when I've submitted my website last time...but I do know I did many work for the company web presence
we have built many houses and opened restaurant, activity is visible on the news list, more projects added to company;s portfolio...

so I was thinking if the website was not accepted months ago (i think its 4-5+ months now) should I try to submit new version with much more information

I know usually they preffer to say NO and do submit in DMOZ once then never think about it too much as important source but for our company I think is important to appear on the local directory

I dont like to spam my link around the internet directories which will give nothing or maybe make worse still google does not like link exchange, and for local searches to beat old players I need something... then I think about dmoz

I believe we have good product for customers, I do unique and very own updates about our constructions and new projects, and I hope one day google will change it;s ranking to get me more trust and visitors
but untill that times I see many websites "spamming" their links and still have priority on SERPS then I dont know how to do... I will appreciate your advice.

but the mai question - should I submit after changes? or forget it

If the domain name is the same, and the changes are visible don't worry about it - editors look at the sites they list and adjust the titles and descriptions accordingly.