Mary B. - simple solution to your dilemma:
Assumptions: your condo is self-managed with an HOA, or utilizes a Management Company. Should that NOT be the case - a trip to the Local Assessor's Office to research closed sales in YOUR condo complex would be in your best interest.
In either case - recommend contacting the respective Mgmt Co. Property Manager, or HOA President, to obtain confirmed closed sale data on units which sold between 300-400 (if any) within the past 2 years. Compare your upgrades to the higher priced units to determine what the Market (buyers) actually paid as contributory value of the additional upgrades you cite (or equivalent upgrades) - IF any report same. Recommend 2007+ versus probable "market bubble high" 2004-2006. I suggest continuted Speculation will accomplish nothing.
Should the Appraiser have dug deeper? That can only be determined either by the Appraiser, the Lender, your RE Agent (if you are using one), OR you.
Should you (the RE Agent, or the Lender) isolate TRULY competitive, confirmed closed sales which demonstrate market reaction to quality and/or renovations ABOVE the current comparables utilized - communicate them to the LENDER and request a Reconsideration of Value.
Older sales beyond 1 year MAY, or may not, require NO Time Adjustment or NEGATIVE Time Adjustment reflecting market conditions variances between their Sale Date and Current Effective Date of Appraisal. Can closed sales OVER 12 months be utilized in addition to more current closed sales, contracted sales, and active listings - YES. Will they require upward, downward, or NO Time Adjustments - that remains to be determine once they are identified and confirmed - after considering all the other comparative elements.
Keep in mind - you may also encounter confirmed info that units with similar upgrades yielded NO additional contributory Values above the highest priced, confirmed, arms-length sales. If so that factor will indicate whether BUYERS actually pay for possibly atypical, above average, upgrades i.e. Functional Obsolescence-Superadequacy.
p.s. In your shoes, I assure you I would hire an Experienced, LOCAL, Ethical Appraiser to perform the Market Data Search for you - most likely within 1-2 days - tops. Well worth your consideration to ensure you obtain VERIFIED, hard FACTS vs suppositions.